Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 292625: Solve using the multiplication principle.
8 over 9 x = 64
Click here to see answer by checkley77(12569)

Question 292593: 3-2(6+x)=13
Click here to see answer by checkley77(12569)

Question 292874: Fay throw a basketball from the basketball hoop. The quadratic equation that models the path of the ball is p(t)= -16t(to the 2nd power) + 20t + 6. If the is 10 feet high, how long is the ball in the air before the ball goes through the hoop?
Click here to see answer by stanbon(57219)

Question 292934: A word question was given to my grandson. I formed it into an equation...because he's only in the 4th grade...I need to show him how to solve it in a SIMPLE WAY . Please help me.
A + 2xA = 12 3/4 minutes
Click here to see answer by Edwin McCravy(8880)

Question 292942: 16t^2= 24t + 15 Solve for t
Click here to see answer by jim_thompson5910(28476)

Question 292876: A bus leaves a station at 8:00 a.m. and averages 30 mi/h. Another bus leaves the same station following the same route two hours after the first and averages 50 mi/h. When will the second bus catch up to the first?

Click here to see answer by brucewill(101)

Question 293011: 3x/4-3=x/2+2
Click here to see answer by unlockmath(1599)

Question 293051: Write an equation of the line containing the given point and perpendicular to a given line. Express your answer in the form y=mx+b.
Click here to see answer by stanbon(57219)

Question 293134: -3 (4y-2)< 2(y+24) please help
Click here to see answer by stanbon(57219)

Question 293122: will you help me solve this equation? -6b + 9 + 4b = -3b +14
Click here to see answer by stanbon(57219)

Question 293136: 5x+3+3x=8x+3-x
Click here to see answer by jim_thompson5910(28476)

Question 293173: Find the equation of straight line passing through the point (2,3) and parallel to the straight line 2X-y=5
Click here to see answer by Alan3354(30959)

Question 293258: what is the answer to this 5t^2 + 3t -9 =0
what is t?
Thanx
Click here to see answer by jim_thompson5910(28476)

Question 293302: How do you solve this equation?
Log base 3 + Log base 3 9=1
Click here to see answer by jim_thompson5910(28476)

Question 293301: how do you solve this equation?
Log base 2x =3 -log base 2 2x
Click here to see answer by stanbon(57219)

Question 293322: How do you solve this equation?
Log base 3 x+ Log base 3 9=1
Click here to see answer by ankor@dixie-net.com(15624)

Question 293376: 2zy*2y=18
where x=1, z=y
Click here to see answer by stanbon(57219)

Question 293421: find the y intercept and the x intercept for the equation
-2x+y=5
Click here to see answer by richwmiller(9135)

Question 293455: Dan recently purchased a new car. what was the cost of the car before tax if the total cost including a 7% tax was $19,795?
Click here to see answer by richwmiller(9135)

Question 293457: The time it takes to build a brick wall varies inversely as the number of people working on it. If it takes 3 days for 8 people to build a brick wall, how long will it take 5 people to build the same wall?
Click here to see answer by ankor@dixie-net.com(15624)

Question 293591: Solve the equation algebraically for all values of x.
We've been trying to solve this problem for hours, but it can't be factored at all.
Click here to see answer by nerdybill(6948)

Question 293587: Given the linear equation:
- Find the y-coordinates of the given points. Show your work.
- Plot those points and graph the linear equation. Submit your graph through the dropbox.
y = -2x + 5
(0, ), (1, ), (2, )

Click here to see answer by richwmiller(9135)

Question 293586: Use an inequality and the five-step process to solve the problem. Show all steps necessary to arrive at your solution.
In order for a chemical reaction to take place, the Fahrenheit temperature of the reagents must be at least 184.49° F. Find the Celsius temperatures at which the reaction may occur. Use C = (F - 32).
Round your answer to the nearest hundredth.

Click here to see answer by stanbon(57219)

Question 293466: 2x + 4 ≤ x +5
the solution set is {x/x ≤ ?}
Click here to see answer by scott8148(6628)

Question 293583: The sum of twice a number and 4 less than the number is the same as the difference between -32 and the number. What is the number?
Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution
Click here to see answer by ankor@dixie-net.com(15624)

Question 293627: y+5y=24
Click here to see answer by brucewill(101)

Question 293451: Mr. Brown purchased $1,775 worth of stock, some at $3.25 per share and some at $4.50 per share. If he bought a total of 500 shares of stock, how many shares of each did he buy?
Click here to see answer by ddkumara(1)

Question 293766: 7> g(x) >-2 where g(x) = -3x-5

the > sign has a - under them but I cant enter it that way on computer.
Click here to see answer by richwmiller(9135)

Question 293765: solve:
2(4+2x)>2x+3(2-5x)
Click here to see answer by richwmiller(9135)

Question 293973: solve for t
(2t-7)^2=0
Click here to see answer by nerdybill(6948)

Question 294070: trying to make sense and solve the following:
3h-x=2(l+t);solve for h
Click here to see answer by richwmiller(9135)

Question 294143: 5(3x-2)=x-4
Click here to see answer by jim_thompson5910(28476)

Question 294506: 6x+3-2x=4-3x+45
Click here to see answer by helpnalgebra(91)

Question 294543: 5x^-8/4^-3z^2

5x^-8/z^2/4^3
5x^-8/z^2/64
320/x^8z^2
is there a break down you could show me?
Click here to see answer by richwmiller(9135)

Question 294535: 4^7
____
4^3

I got 256 but I got to show all steps
4^7-3
4^4
thats all i got? please help
Click here to see answer by richwmiller(9135)

Question 294515: What is the ones digit of 7^23
F. 3 G. 5 H. 7 I. 9
Click here to see answer by Alan3354(30959)

Question 294691: Tom's father is 3times old as tom. 4years ago, he was 4 times older. how old is tom?
Click here to see answer by mananth(12270)

Question 294663: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function, H= p * at , (H = p*a^t) where p is the number of new homes built in the first year recorded, and t is the number of years.
You are going to decide if you would like to be a homebuilder in this market.
Step 1 is to choose a value for “p” between 50 and 100; this is the initial number of homes built.
Step 2 is to choose a value for “a”; this is the growth factor – you can choose “a” to be any number between 0 and 1 “OR” choose “a” to be any number greater than 1. Do not choose 0 or 1, as these are trivial cases.
1) Insert the chosen values for “p” and “a” into the formula listed above.
2) Use the formula to find the number of homes built, H, at any three values of time, t, in years that you want. Show your calculations and put units on your final answer!
3) Provide a written summary of your results explaining them in the context of the original problem. If you were a homebuilder, would you be interested in continuing to build homes in this market over the long run? Explain why or why not.
Do NOT use the same values for “p” and “a” as another student in the class.
Be sure to reference your sources using APA style.

Click here to see answer by richwmiller(9135)

Question 294606: How do you solve for x=-5 and graph?
Click here to see answer by Fombitz(13828)

Question 294949: Express the following using negative exponents.
1/6^4=

Click here to see answer by richwmiller(9135)

Question 294945: Convert to decimal notation.
2.0592 × 10-7
0.000000020592
0.0000020592
0.00000020592
-20,592,000
Click here to see answer by checkley77(12569)

Question 294951: Express using positive exponents. Then, if possible, simplify.
(1/5)^-4

Click here to see answer by helpnalgebra(91)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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